Troubleshooting (Bluetooth)

Only the latest generation (G2v2) tachographs are capable of downloading the driver card data and tachograph data via Bluetooth. They are easy to identify because a Bluetooth symbol is visible on their front panel. Currently only VDO and Stoneridge manufacture this type of device. Unfortunately, this alone is not sufficient, as early software versions were practically unsuitable for Bluetooth communication. Some of these early software versions do not even allow pairing; with others, the Bluetooth communication freezes after downloading one card. In the latter case, disconnecting the vehicle's power supply is often the only remedy.

VDO DTCO 4.1 — Minimum software version required for stable operation: v4141 (4.1b 04.01.41)

Stoneridge SE5000-8.1 — Minimum software version required for stable operation: v1619 (version v2525 is also available)

We strongly recommend not attempting Bluetooth communication if your tachograph's software version does not meet the minimum requirement. You will save yourself a great deal of frustration. Take the tachograph in for a software update.

The phone cannot find a Bluetooth-enabled tachograph

  • Check that the tachograph is Bluetooth capable: you should see the Bluetooth symbol on its front panel.
  • Check that Bluetooth is enabled on the tachograph: you should be able to see the tachograph in your phone's Bluetooth settings (Do not pair it here!)
  • The ignition must be in the ON position.
  • After inserting the driver card or company card, wait until the tachograph menu becomes accessible.

It may happen that after a previous download attempt the tachograph gets into a state where it can no longer be connected to.  You may need to switch off the vehicle's main switch so that the tachograph's external power supply is temporarily interrupted.

Pairing fails

  • Some tachographs only allow pairing with a single phone. Delete the previously paired devices from the tachograph.
  • If you have a Stoneridge tachograph, you can also attempt pairing from the phone's Bluetooth settings.
  • After inserting the driver card or company card, wait until the tachograph menu becomes accessible.

Download fails

You should observe whether the download fails right at the beginning or only partway through. A typical sign of a problem is the download failing at different phases across multiple attempts. In that case the Bluetooth signal is not strong enough (move closer to the tachograph) or something is causing interference (try to eliminate the source of interference).  Otherwise, the various error codes will indicate the nature of the problem.

  • After inserting the driver card or company card, wait until the tachograph menu becomes accessible.
  • Check that ITS is enabled. This must be done separately for each driver card.
  • Check that RHMI is enabled.
  • Delete the pairing from both the phone and the tachograph menu. A previous pairing does not authorise data downloading with different cards.

If the problem persists, contact us and send us the app's log file. You can find this function in the main screen menu.